package com.itheima.demo;

import java.util.Scanner;

public class StringText03 {
    public static void main(String[] args) {
        StringText03 show = new StringText03();
        //System.out.println(show.number());
        show.number();
    }
    public void number() {
        Scanner sc = new Scanner(System.in);
        System.out.println("请输入一个字符串：");
        String line = sc.nextLine();
        int bigCount=0;
        int smallCount=0;
        int numberCount=0;
        int errornumber=0;
        //遍历字符串：
        for (int i = 0; i < line.length(); i++) {
            char ch = line.charAt(i);
            if (ch >= 'A' && ch <= 'Z') {
                bigCount++;
            } else if (ch >= 'a' && ch <= 'z') {
                smallCount++;
            } else if (ch >= '0' && ch <= '9') {
                numberCount++;
            }else{
                errornumber++;
            }
        }
        System.out.println("大写字母："+bigCount+"个");
        System.out.println("小写字母："+smallCount+"个");
        System.out.println("数字："+numberCount+"个");
        System.out.println("其他字符："+errornumber+"个");
    }
}
